yom ate
envivonmont
.
=
a!
an 8
evor,
-
ee
wey
a
at
+
sye
7
-
wayne
-
“.,
tho purvovso
thoy will co
wed
eee
Beak
21
tho ©ats. buvrow horwiuentnily Late
tha mound, and
cocss.
a!
tatzen
s
bam: or into
du this
Taw on,
hag
Ste
Jae
Ta
Pad
.
pe
tond to be tiuch doorar
ca for es fener fest dn danpch,
.
~
th
”
«
oO om ae of
2
Tye
7
tet
*
.
athe
:
a
be
et
bon.
:
* ot
:
thints the main vooson for this is thet the soll ef the nouncs is
mush solter
”
than the codl of the orasslend sinse it has
ote?
.
a
oe
%,
7
ae
a
. %,.
“>
taqeas
ae
5
J
ate
lepson7ad
ws7 co thoy
enn
buvroy
into
dt
a
“4%
«
a
.
<
a”
Another
olfect
moy *be an
the
t2
Che
tres
purprvans
Pay
wet dD
b222,
A Vere ees
St
Cao bite
whovess tha orcvning
9 1%4
“
em
over
gfe se
under
er
2
V2
ea
boon
L
.
4
.
move
cnsily.
aye
crassiancs,
bus
a
ry
to
yeasts
on
VTS
te
*,
gas
Tho ononings
elu
a3
oeee
on
_
Comm oes
qt taal 9
to tio burrows in the sise of the banks are
ate
ae?
<
o«
a
eo Vey
ry
foes
wn
4
.
ad
usually uncoverad,
4
Tho
ovision of artiticiol ncostang in buevow aron
is another effset of prolininary constvuetion,
Av fies’ sicsat,
At appears to bo a laicht effect, althouzh in the survival of the
pestiation it prouwwbly is a magor esfoet.
Tho artificial neast-
ing arsas are provided for tho most part ny cable traneis which
enter into tho insirenont
bunkers.
These
I do not Irn ow the ful
ef
Thoy ara vnder tha ¢
$
n
thon,
but it is considerable.
Ospth of thres fect to elght foot.
The rats apprvar to ks
QO
fo
matoly elsht inches in diemstor.
in the bunzers, be-
puncant in thes
Cause you can Ses
Eco as high as 15
in ons buniror
Tt
eae
Hoveves,
nuuber of rats is fairly linitdd with rola tion to tho
the Gntire colony.
This living of the rats ain tho enbie 4unnel
magiRt